|
| Rank | Year | | Annual Flow | 3-Year Mean |
| 1980 | 315532800000 | 110.2 |
|
| 1981 | 347155200000 | 27.6 |
|
| 1982 | 378691200000 | 112.4 |
83.4 |
| 1983 | 410227200000 | 206.6 |
115.5 |
| 1984 | 441763200000 | 57.9 |
125.6 |
| 1985 | 473385600000 | 34.4 |
99.6 |
| 1986 | 504921600000 | 112.7 |
68.3 |
| 1987 | 536457600000 | 10.5 |
52.5 |
| 1988 | 567993600000 | 7.2 |
43.5 |
| 1989 | 599616000000 | 12.3 |
10.0 |
| 1990 | 631152000000 | 7.4 |
8.9 |
| 1991 | 662688000000 | 24.5 |
14.7 |
| 1992 | 694224000000 | 31.4 |
21.1 |
| 1993 | 725846400000 | 127.2 |
61.0 |
| 1994 | 757382400000 | 19.2 |
59.2 |
| 1995 | 788918400000 | 148.5 |
98.3 |
| 1996 | 820454400000 | 148.9 |
105.5 |
| 1997 | 852076800000 | 123.9 |
140.4 |
| 1998 | 883612800000 | 191.2 |
154.7 |
| 1999 | 915148800000 | 56.5 |
123.9 |
| 2000 | 946684800000 | 79.4 |
109.0 |
| 2001 | 978307200000 | 26.6 |
54.2 |
| 2002 | 1009843200000 | 11.1 |
39.1 |
| 2003 | 1041379200000 | 39.1 |
25.6 |
| 2004 | 1072915200000 | 28.6 |
26.3 |
| 2005 | 1104537600000 | 41.4 |
36.4 |
| 2006 | 1136073600000 | 68.2 |
46.1 |
| 2007 | 1167609600000 | 12.0 |
40.5 |
| 2008 | 1199145600000 | 29.6 |
36.6 |
| 2009 | 1230768000000 | 30.8 |
24.1 |
| 2010 | 1262304000000 | 36.6 |
32.3 |
| 2011 | 1293840000000 | 66.7 |
44.7 |
| 2012 | 1325376000000 | 14.8 |
39.4 |
| 2013 | 1356998400000 | 28.3 |
36.6 |
| 2014 | 1388534400000 | 2.9 |
15.3 |
| 2015 | 1420070400000 | 13.1 |
14.8 |
| 2016 | 1451606400000 | 40.7 |
18.9 |
| 2017 | 1483228800000 | 120.0 |
57.9 |
| 2018 | 1514764800000 | 9.4 |
56.7 |
| 2019 | 1546300800000 | 56.7 |
62.0 |
| 2020 | 1577836800000 | 6.0 |
24.0 |
| 2021 | 1609459200000 | | |
|---|
| 2022 | 1640995200000 | 10.8 |
-38.2 |
| 2023 | 1672531200000 | 102.8 |
-5.9 |
| 2024 | 1704067200000 | 17.4 |
43.7 |
| 2025 | 1735689600000 | | |
|---|
| 2026 | 1767225600000 |
|
|
| Rank | Year | | Seasonal Flow | 3-Year Mean |
| 1980 | 315532800000 | 16.3 |
|
| 1981 | 347155200000 | 3.0 |
|
| 1982 | 378691200000 | 47.9 |
22.4 |
| 1983 | 410227200000 | 28.3 |
26.4 |
| 1984 | 441763200000 | 11.6 |
29.3 |
| 1985 | 473385600000 | 4.5 |
14.8 |
| 1986 | 504921600000 | 4.9 |
7.0 |
| 1987 | 536457600000 | 1.4 |
3.6 |
| 1988 | 567993600000 | 1.4 |
2.6 |
| 1989 | 599616000000 | 1.1 |
1.3 |
| 1990 | 631152000000 | 1.1 |
1.2 |
| 1991 | 662688000000 | 2.8 |
1.7 |
| 1992 | 694224000000 | 1.9 |
1.9 |
| 1993 | 725846400000 | 26.1 |
10.3 |
| 1994 | 757382400000 | 3.5 |
10.5 |
| 1995 | 788918400000 | 29.4 |
19.7 |
| 1996 | 820454400000 | 10.8 |
14.6 |
| 1997 | 852076800000 | 2.4 |
14.2 |
| 1998 | 883612800000 | 51.8 |
21.7 |
| 1999 | 915148800000 | 25.0 |
26.4 |
| 2000 | 946684800000 | 2.7 |
26.5 |
| 2001 | 978307200000 | 3.8 |
10.5 |
| 2002 | 1009843200000 | 2.2 |
2.9 |
| 2003 | 1041379200000 | 10.5 |
5.5 |
| 2004 | 1072915200000 | 1.9 |
4.8 |
| 2005 | 1104537600000 | 3.2 |
5.2 |
| 2006 | 1136073600000 | 29.5 |
11.5 |
| 2007 | 1167609600000 | 1.3 |
11.3 |
| 2008 | 1199145600000 | 1.6 |
10.8 |
| 2009 | 1230768000000 | 2.5 |
1.8 |
| 2010 | 1262304000000 | 8.5 |
4.2 |
| 2011 | 1293840000000 | 8.8 |
6.6 |
| 2012 | 1325376000000 | 6.4 |
7.9 |
| 2013 | 1356998400000 | 8.7 |
8.0 |
| 2014 | 1388534400000 | 0.8 |
5.3 |
| 2015 | 1420070400000 | 1.2 |
3.5 |
| 2016 | 1451606400000 | 3.5 |
1.8 |
| 2017 | 1483228800000 | 9.3 |
4.6 |
| 2018 | 1514764800000 | 1.1 |
4.6 |
| 2019 | 1546300800000 | 5.1 |
5.2 |
| 2020 | 1577836800000 | 2.7 |
3.0 |
| 2021 | 1609459200000 | | |
|---|
| 2022 | 1640995200000 | | |
|---|
| 2023 | 1672531200000 | 4.6 |
-41.9 |
| 2024 | 1704067200000 | 1.2 |
1.2 |
| 2025 | 1735689600000 | | |
|---|
| 2026 | 1767225600000 |
|
|
|